So when everyone talks about giving their nurses gifts after their delivery, do they mean their…

So when everyone talks about giving their nurses gifts after their delivery, do they mean their nurses who've been with them the entire time from their doctors office or the ones that work with them at the time of their delivery? Or both. I kinda want to get something for them all but I only know my nurses at my OB office and don't know how much more of anything I'd need if it's supposed to be for the ones at the hospital too.